DNS is key to many network services. Internet browsing, mail server, web server etc all depends upon DNS server. Most ISP (Internet service provider) have their own caching dns server to reduce network load. But how do you find out DNS server IP address? How do you find out current DNS server IP address? Under Linux, FreeBSD and all UNIX like oses you have file called /etc/resolv.conf file. It is often know as resolver configuration file. If you are using MS-Windows version Vista / 7 / NT / 2000 / XP /98 etc then see below for how to find out DNS server address under MS-Windows operating systems.

Linux / UNIX / Apple OS X Find Out Dns Server Addresses

The resolver is a set of routines in the C library that provide access to the Internet Domain Name System (DNS). The resolver configuration file contains information that is read by the resolver routines the first time they are invoked by a process.

Commend to find out your dns servers ip address under Linux/BSD/Unixish system

To see your DNS server address type following command as shell prompt:$ cat /etc/resolv.confOR$ less /etc/resolv.conf

nameserver 203.54.1.20nameserver 203.54.1.21

Where,

nameserver 203.54.1.20 : It is Name server IP address (in dot notation) of a name server that the resolver should query. All your application will use this IP address for DNS purpose.

Find Out DNS Server IP Address Under MS-Windows Version 7/Vista/XP/NT/2003